Editing Triumph TR4 (section)

===Running gear===
The TR4's front suspension consists of upper and lower wishbones, and telescopic dampers. Running changes to the car included a revised front suspension geometry, indicated by a smooth upper wishbone, and a revised front brake caliper and pad size.<ref name="trdc-tr4"/>

The rear suspension includes a [[Beam axle|live axle]] with semi-elliptical springs, and lever-arm dampers.

The TR4 is fitted with [[rack and pinion steering]], replacing the cam and lever system used on the earlier TR models.<ref name="trdc-tr4"/>

The TR4 was originally fitted with 15x4.5" disc wheels. Optional 48-lace wire wheels could be ordered with one of three finishes: painted the same colour as the car's bodywork (rare), stove-enamelled (matte silver with chrome spinners, most common) or in matte or polished chrome finishes (originally rare, but now more common). Originally, the tyres most commonly fitted were 590-15 [[Bias-ply tire|bias ply]] or optional radial tyres. At one point, American Racing alloy (magnesium and aluminium) wheels were offered in the US as an option, in 15x5.5" or 15x6" size.